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संबंधित प्रश्न
Name the material which is used for making the heating element of an electric iron.
If two resistors of 25 Ω and 15 Ω are joined together in series and then placed in parallel with a 40 Ω resistor, the effective resistance of the combination is :
(a) 0.1 Ω
(b) 10 Ω
(c) 20 Ω
(d)40 Ω
Draw a V-I graph for a conductor at two different temperatures. What conclusion do you draw from your graph for the variation of resistance of conductor with temperature?
State how are the two resistors joined with a battery when equivalent resistance is more than either of the two resistances.
What is the equivalent resistance between A and B in the given circuit (Fig?)
How does the resistivity of a semiconductor depend on temperature?
Calculate the equivalent resistance between the points A and B for the following combination of resistors:
Six resistances are connected together as shown in the figure. Calculate the equivalent resistance between points A and B.
Calculate the value of the resistance which must be connected to a 15 ohm resistance to provide on effective resistance of 6 ohm.
A metal wire of resistance 6 Ω is stretched so that its length is increased to twice its original length. Calculate its new resistance.
